/*
 * Copyright (c) 2008 Nathan Sweet
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy,
 * modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software
 * is furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
 * IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

package com.esotericsoftware.yamlbeans;

/**
 * Represents the version of a YAML document.
 * @author <a href="mailto:misc@n4te.com">Nathan Sweet</a>
 */
public class Version {
	public final int major;
	public final int minor;

	public Version (String value) {
		if (value == null) throw new IllegalArgumentException("value cannot be null.");
		int dotIndex = value.indexOf('.');
		if (dotIndex == -1) throw new IllegalArgumentException("value must contain a period: " + value);
		major = Integer.parseInt(value.substring(0, dotIndex));
		minor = Integer.parseInt(value.substring(dotIndex + 1));
	}

	public Version (int major, int minor) {
		this.major = major;
		this.minor = minor;
	}

	public String toString () {
		return major + "." + minor;
	}

	public int hashCode () {
		final int prime = 31;
		int result = 1;
		result = prime * result + major;
		result = prime * result + minor;
		return result;
	}

	public boolean equals (int minor, int major) {
		return this.minor == minor && this.major == major;
	}

	public boolean equals (Object obj) {
		if (this == obj) return true;
		if (obj == null) return false;
		if (getClass() != obj.getClass()) return false;
		final Version other = (Version)obj;
		if (major != other.major) return false;
		if (minor != other.minor) return false;
		return true;
	}
}
